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COLORADO LEGACY LAN[ <br /> TABLE 3A:GROUNDWATER SAMPLE FIELD PARAMETERS <br /> Field Parameters <br /> Location ID/ Static Depth to Dissolved <br /> Sample[Dz Sample Date Water PH Temperature Conductivity ORP Oxygen Notes/Location Descriptio <br /> (ftbtoc) (unitless) (°C) (µ5/cm) (mom Oxygen <br /> MW-00 05/26/2022 7.48 8.79 6.6 236.6 28.3 3.84 Alluvial well. Above waste dumps,upstream of site. <br /> MW-0 5/26/2022 23.0 9.38 9.4 597.0 -14.6 390 Alluvial well.Toe of south waste rock pile. <br /> MW-6 06/07/2022 8.75 7.96 10.8 679.0 86.4 36.1 Alluvial well. Near former Sump#2. <br /> MW-7 Not Sampled' -- -- -- -- -- Alluvial well. Near Sump#1. <br /> MW-12 Not Sampled' -- -- -- -- -- Below Sump#1.Alluvial well. <br /> MW-13 06/01/2022 441.26 7.56 9.0 283.7 -25.4 0.57 Nitrogen purge.Replaced MW-10.Previous Sample ID=L1.Bad <br /> MW-14 06/01/2022 105.85 7.69 8.6 211.3 -159.0 0.2 Nitrogen purge.Replaced MW-11. Previous Sample ID=L2.Bac <br /> MW-15 05/25/2022 395.71 8.87 11.2 1166 -285.4 0.16 Nitrogen purge.Previous Sample ID=L3.Bedrock well. <br /> MW-16 -- -- -- -- -- -- Previous Sample ID=L4.Bedrock well.No sample required. <br /> MW-17 Not Sampled' -- -- -- -- -- -- Nitrogen purge.Previous Sample ID=L5. <br /> MW-18 5/25/2022 183.3 7.82 11.5 987.0 -57.9 0.14 Previous Sample ID=L6.Bedrock well,installation targeted Illir <br /> MW-19 Not Sampled' Toe of south waste rock pile.Previous Sample ID=L7. <br /> MW-20 Not Sampled' -- -- -- -- -- -- Usually,dry.Top of south waste rock pile. <br /> Raw Feed 5/24/2022 7.21 19.6 3395 -91.56 2.36 Sample collected from spigot inside water treatment plant. This <br /> from the mine pool.Previous Sample ID=Mine Refill. <br /> Sumps Not Sampled' Sample collected from sump water from Sump#1(Master Sump <br /> Notes: <br /> 'Not sampled during this sampling event. <br /> 2MW-1,MW-2,MW-3A,and MW-8 were removed in 2019;MW-4 and MW-5 were removed in 2008. MW-8 was replaced with M W-12. M W-10 and MW-11 were fouled(bentonite in screened interval)and replaced <br /> µS/cm=microSemiens per centimeter <br /> °C=Degrees Celsius <br /> ft btoc=Feet below top of casing <br /> ID=Identifier <br /> mg/L=Milligrams per liter <br /> my=Millivolts <br /> MW=Monitoring Well <br /> ORP=Oxidization Reduction Potential <br />